it shouldn't hurt that much again. ask your BF to start it with small jerks but ask him to increase the speed gradually. if he jerks hard in the start then obviously that hurts as your anus is not ready for that huge penis. try applying some lubs. try to stay on the penis a little longer. that will make you habitual. if still have problems. just get back to me.. i will make your anus a little wider and elastic.

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